The funny thing is that everybody knows how this all ends. The only question is when. And I must admit, it's absolutely fascinating to watch.
I was quite young when the dot com bubble happened and didn't grasp the whole insanity of it, then witnessed the financial crisis (while also working in finance - quite interesting times), and now I can fully appreciate Sir Isaac Newton statement "I can calculate the motions of the planets, but I cannot calculate the madness of men" - which he made after he lost a fortune in the South Sea Company Bubble !